ok ,when i right understand you have it downloaded over the addon4xbox repo from the xbmc.org repo!
First to understand.
Main xbmc and xbmc4xbox have not the same codebase.
The addons what you can access over the xbmc4xbox repo with the addon4xbox installer since most adapted main xbmc addons to working on xbmc4xbox to and a little amount from self developed addons from me or others for xbmc4xbox.
I have the next days a look on your Problem with twitchtv on xbmc4xbox.
I think it's simple a addheader problem on xbmc4xbox but i must have a look.
Plenty of xbmc.org repo addons still work, plenty don't but there's still a fair few that do. It's been well documented over the years that xbmc4xbox and xbmc are two completely different entities so most users are well aware of that by now and they know that the xbmc4xbox repo is the one to use and if you can't find what you want you can try the other repo's. You never know you may get lucky and it works out of the box, with the upcoming change in codebase that buzz has been working on we should hopefully have a lot more compatibility with mainbranch soon.
